[PATCH 4/4] dt-binding:perf: Add Amlogic DDR PMU

[Jiucheng Xu <jiucheng.xu@amlogic.com>]

Add binding documentation for the Amlogic G12 series DDR
performance monitor unit.

Signed-off-by: Jiucheng Xu <jiucheng.xu@amlogic.com>
---
 .../devicetree/bindings/perf/aml-ddr-pmu.yaml | 51 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml

diff --git a/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml b/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml
new file mode 100644
index 000000000000..c586b4ab4009
--- /dev/null
+++ b/Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/perf/aml-ddr-pmu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic G12 DDR performance monitor
+
+maintainers:
+  - Jiucheng Xu <jiucheng.xu@amlogic.com>
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - aml,g12-ddr-pmu
+      - items:
+          - enum:
+              - aml,g12-ddr-pmu
+          - const: aml,g12-ddr-pmu
+
+  reg:
+    maxItems: 2
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - model
+  - dmc_nr
+  - chann_nr
+  - reg
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+          ddr_pmu: ddr_pmu {
+                  compatible = "amlogic,g12-ddr-pmu";
+                  model = "g12a";
+                  dmc_nr = <1>;
+                  chann_nr = <4>;
+                  reg = <0x0 0xff638000 0x0 0x100
+                         0x0 0xff638c00 0x0 0x100>;
+                  interrupts = <GIC_SPI 52 IRQ_TYPE_EDGE_RISING>;
+                  interrupt-names = "ddr_pmu";
+          };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index fd2a56a339b4..ac0a1df4622d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1055,6 +1055,7 @@ M:	Jiucheng Xu <jiucheng.xu@amlogic.com>
 S:	Supported
 W:	http://www.amlogic.com
 F:	Documentation/admin-guide/perf/aml-ddr-pmu.rst
+F:	Documentation/devicetree/bindings/perf/aml-ddr-pmu.yaml
 F:	drivers/perf/amlogic/
 F:	include/soc/amlogic/
 
-- 
2.25.1